Question

A block slides down an inclined plane. Which force does zero work? I. Weight II. Friction III. Normal

Answer 1

II.  The work done by frictional force is zero.

What is work done?

Work is said to be done when an applied force moves an object over a given distance.

Work done by friction = μ(Fn)d

where;

• μ is coefficient of friction
• Fn is normal force

Since the frictional force could not prevent the block from sliding, we can conclude that the work done by frictional force is zero.

Learn more about work done here: brainly.com/question/8119756

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