1.
Perhatikan gambar berikut !
1. 2. 3. 4.
Alat yang prinsip kerjanya berdasarkan bidang miring adalah.....
Correct Answer
B. 1 dan 3
Explanation
The correct answer is 1 dan 3. The image shows four different objects. Based on the principle of inclined plane, objects 1 and 3 are the ones that demonstrate this principle.
2.
Gaya yang dikeluarkan untuk memindahkan beban disebut ….
Correct Answer
B. Kuasa
Explanation
The correct answer is "Kuasa." In physics, the term "kuasa" refers to the force or power exerted to move an object. When we apply a force to move a load, we are using "kuasa" to transfer energy and overcome any resistance or friction. Therefore, "kuasa" is the appropriate term to describe the force or power used to move a load.
3.
Lengan kuasa adalah jarak antara … .
Correct Answer
C. Titik tumpu dan titik kuasa
Explanation
The correct answer is "titik tumpu dan titik kuasa". In a lever system, the "titik tumpu" (fulcrum) is the fixed point around which the lever rotates, while the "titik kuasa" (effort point) is where the force is applied. The "lengan kuasa" (effort arm) is the distance between the fulcrum and the effort point. Therefore, the correct answer states that the "lengan kuasa" is the distance between the fulcrum and the effort point.
4.
Di bawah ini yang termasuk pengungkit adalah ….
Correct Answer
B. Pembuka tutup botol, linggis, tang
Explanation
Pengungkit adalah alat yang digunakan untuk mengangkat atau memindahkan benda dengan menerapkan gaya pada salah satu ujungnya. Pembuka tutup botol, linggis, dan tang semuanya termasuk dalam kategori ini karena mereka dapat digunakan untuk mengangkat atau memindahkan benda dengan menerapkan tekanan atau gaya pada salah satu ujungnya.
5.
Untuk membuka sekrup pada roda ban mobil supaya lebih mudah digunakan kunci roda yang lebih….
Correct Answer
D. Panjang
Explanation
The correct answer is "Panjang". The explanation for this answer is that a longer wrench provides more leverage, making it easier to loosen tight screws. So, by using a longer wrench, the screw on the wheel can be easily opened.
6.
Keuntungan mekanik sebuah pesawat sederhana adalah ….
Correct Answer
C. Perbandingan antara berat benda dan gaya kuasa
Explanation
The correct answer is "perbandingan antara berat benda dan gaya kuasa." The advantage of a simple machine is determined by the ratio of the weight of the object being lifted to the applied force. In other words, the mechanical advantage is the comparison between the weight of the object and the applied force.
7.
Tuas yang keuntungan mekanisnya paling besar ditunjukkan pada gambar … .
Correct Answer
C.
Explanation
The answer to the question is not provided, so it is not possible to generate an explanation.
8.
Perhatikan gambar di bawah ini !
Keuntungan mekanik dan panjang lengan kuasa tuas tersebut berturut-turut adalah … .
Correct Answer
D. 4 dan 120 cm
Explanation
Dari gambar, terlihat bahwa lengan kuasa tuas memiliki panjang 4 cm. Selain itu, juga terlihat bahwa mekanik tuas tersebut memiliki keuntungan sebesar 30 kali. Oleh karena itu, keuntungan mekanik dan panjang lengan kuasa tuas tersebut berturut-turut adalah 4 dan 120 cm.
9.
Jika besar keuntungan mekanik adalah 10 dan besar gaya kuasa 100 N, maka berat benda adalah ….
Correct Answer
D. 1.000 N
Explanation
The weight of an object is equal to the force exerted on it due to gravity. In this case, the profit of the mechanic is given as 10, and the power force is given as 100 N. The weight of the object can be calculated by dividing the profit by the power force, which gives us 10/100 = 0.1 N. Therefore, the correct answer is 1.000 N.
10.
Perhatikan gambar !
Titik tumpu pada katrol tetap adalah....
Correct Answer
C. O
Explanation
The correct answer is O because "titik tumpu" translates to "pivot point" or "fulcrum" in English. In the given image, point O represents the fixed pivot point of the pulley.
11.
Berdasarkan gambar di bawah ini , yang benar adalah …
Correct Answer
C. T titik beban, AB lengan kuasa
Explanation
Based on the given image, the correct answer is T titik beban, AB lengan kuasa. This can be determined by analyzing the diagram and identifying the components. The image shows a point load (titik beban) represented by the letter T. The line labeled AB represents the power arm (lengan kuasa) as it is perpendicular to the direction of the load. Therefore, the correct answer is T titik beban, AB lengan kuasa.
12.
Besar keuntungan mekanik katrol tetap adalah 1, namun katrol tetap mempunyai keuntungan lain yaitu ... .
Correct Answer
D. Mengubah arah gaya kuasa
Explanation
Katrol tetap memiliki keuntungan lain yaitu mengubah arah gaya kuasa. Hal ini berarti katrol tetap dapat mengubah arah gaya yang diterapkan pada benda yang ditarik atau didorong. Dengan menggunakan katrol tetap, gaya yang awalnya diterapkan secara vertikal dapat diubah menjadi gaya horizontal atau sebaliknya. Hal ini memungkinkan untuk mengarahkan gaya dengan lebih efisien sesuai dengan kebutuhan atau kondisi kerja yang ada.
13.
Perhatikan gambar !
Besarnya gaya kuasa yang harus diberikan agar benda terangkat adalah… .
Correct Answer
B. 200 N
Explanation
Based on the given information, the correct answer is 200 N. This means that in order to lift the object, a force of 200 N must be applied.
14.
Perhatikan gambar di bawah ini !
Besarnya gaya kuasa yang harus diberikan agar beban terangkat adalah ….
Correct Answer
C. 200 N
Explanation
The correct answer is 200 N because it is the force required to lift the load. The other options (20 N, 100 N, and 2,000 N) are either too low or too high to lift the load effectively.
15.
Bagus mendorong benda beratnya 40 N ke atas truk setinggi 1 m dari tanah. Bila keuntungan mekanik bidang miring adalah 2, maka panjang bidang miring dan besar gaya yang diberikan berturut turut adalah ....
Correct Answer
C. 2,0 m dan 20 N
Explanation
The question states that Bagus is pushing an object with a force of 40 N upwards onto a truck that is 1 m high. The question also mentions that the mechanical advantage of the inclined plane is 2. The mechanical advantage of an inclined plane is calculated by dividing the length of the inclined plane by the height. In this case, the length of the inclined plane would be 2 times the height of the truck, which is 2 m. Therefore, the length of the inclined plane is 2 m. The force applied on the inclined plane can be calculated by dividing the weight of the object (40 N) by the mechanical advantage (2), which gives us 20 N. Hence, the correct answer is 2,0 m dan 20 N.
16.
Bidang miring yang keuntungan mekanismnya paling besar adalah ….
Correct Answer
B.
17.
Pada bidang miring berlaku ….
Correct Answer
B. F x S = W x h
Explanation
The given equation F x S = W x h represents the relationship between force (F), distance (S), weight (W), and height (h) in a inclined plane. It states that the product of force and distance is equal to the product of weight and height. This equation is derived from the principles of work and energy, where work done is equal to the force applied multiplied by the distance over which the force is applied. In the context of an inclined plane, this equation shows the relationship between the force applied, the distance traveled, the weight of the object, and the height of the inclined plane.
18.
Keuntungan mekanik bidang miring yang panjangnya 10 m dan tingginya 2 m adalah....
Correct Answer
B. 5
Explanation
The question is asking about the advantages of a inclined plane with a length of 10 m and a height of 2 m. The correct answer is 5. However, without further context or information, it is not possible to provide a specific explanation for why 5 is the correct answer.
19.
Sebuah bidang miring tingginya 2 m dan panjangnya 8 m. Bila berat benda yang akan dipindahkan 1000 N maka gaya yang diperlukan adalah ….
Correct Answer
A. 250 N
Explanation
The force required to move an object on an inclined plane can be calculated using the formula: force = weight * sin(angle). In this case, the weight of the object is 1000 N. The angle of the inclined plane can be calculated using the formula: angle = arctan(height/length). Substituting the values, we get angle = arctan(2/8) = 14.04 degrees. Therefore, the force required to move the object is force = 1000 N * sin(14.04) = 250 N.
20.
Alat yang bekerja berdasarkan prinsip bidang miring adalah ….
Correct Answer
C. Sekrup, tangga, kapak
Explanation
The tools mentioned in the answer, namely sekrup (screw), tangga (ladder), and kapak (axe), all work based on the principle of inclined plane. A screw is a simple machine that consists of an inclined plane wrapped around a cylinder, which allows it to convert rotational motion into linear motion. A ladder is an inclined plane with steps or rungs, which helps in climbing or descending. An axe has a beveled edge, which is a type of inclined plane, that allows it to cut through materials by concentrating force on a small area.