0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is $$( g = 9.8 m / sec^2 )$$

A
$$+490 \quad joules$$
B
$$-490 \quad joules$$
C
$$-980 \quad joules$$
D
$$+980 \quad joules$$
Solution
Verified by Toppr

Correct option is D. $$+980 \quad joules$$Work done is given by:$$W=Fs$$Where F is the force and s is the displacementAs the body moves in the direction of force, therefore work done by gravitational force will be positive.$$W = Fs =mgh = 10 \times 9.8 \times 10 = 980 J$$

16
Similar Questions
Q1
A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is $$( g = 9.8 m / sec^2 )$$
View Solution
Q2
A body of mass 10 kg is dropped to the ground from a height of 10 metre. The work done by the gravitational force is (g=9.8 ms2)
View Solution
Q3

A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is g=9.8 m/sec2

View Solution
Q4
A body of mass 10 kg is dropped to the ground from a height of 10 metre. The work done by the gravitational force is (g=9.8 m/s2)
View Solution
Q5

a body of mass10kg is dropped from a height of 10m.what is the work done by gravitional force?

View Solution