Question

A vertical spring with force constant kis
fixed on a table. A ball of mass m at a
height h above the free upper end of the
spring falls vertically on the spring so
that the spring is compressed by a
distance d. The net work done in the
process is

a. mg (h+d) – kdº
b. mg (h– d) – 3kd
c. mg (h – d) + kd
d. mg (h+ d) + fkd​

Answer 1

Answer:

Work done BY gravitational force = mg(h+d)

Work done ON spring = 0.5kd

2

Total work done on the ball = W

g

+W

byspring

=mg(h+d)−0.5kd

2

Explanation:

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