1.
A 75 kg man climbs a staircase with a height of 4 m. What is the work done against gravity?
A
300 J
B
750 J
C
3000 J
D
4000 J
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A 75 kg man climbs a staircase with a height of 4 m. What is the work done against gravity?
300 J
750 J
3000 J
4000 J
What is the condition for work to be done by a force?
The force must be zero
There must be a displacement in the direction of the applied force
The object must be at rest
The displacement must be perpendicular to the force