Question

An arrow fired from a bow attains a maximum height of 5 m from the level it is released. If the mass of the arrow is 500 g, work done by the bow on the arrow is greater than which of the following? Assume $g=10m/s^2$

• A. 20J
• B. 25J
• C. 30J
• D. 35J

Answer 1

Answer: (A), (B)

The correct options are
A

20J

B

25J

The work done by the bow on the arrow would be equal to the maximum gravitational potential energy stored in it, which would be equal to $m\times g\times h.$

Given, $m=500g=\frac{500}{1000}kg,h=5m$

Work done $=m\times g\times h=\frac{500}{1000}\times 10\times 5=25J$