Physicsmedium · Past Paper
How much force is required to lift a 5 kg object vertically at a constant speed? (g = 9.8 m/s^2)
A5 N
B9.8 N
C49 N
D0 N
✓ Correct Answer: C — 49 N
To lift at constant speed, the applied force must equal the weight. F = mg = 5 * 9.8 = 49 N.
Share this question
More from Physics
- Which of the following materials has a negative temperature coefficient of resistance?
- Which sound wave property changes when the source moves relative to the observer (Doppler Effect)?
- Which of the following is a non-renewable source of energy?
- Which of the following materials is transparent?
- A person claps their hands near a high wall and hears an echo after 2 seconds. If the speed of sound is 340 m/s, how far is the wall?