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 correctly relates frequency (f), wavelength (L), and speed (v)?
- A simple microscope has a lens of focal length 5 cm. Its magnifying power for relaxed eye (image at infinity) is:
- If the density of an object is less than the density of the liquid, the object:
- Two bulbs, 60W and 100W, are connected in series. Which one will glow brighter?
- Which of the following materials is the best absorber of sound?