Question

Which of the following statements support the characteristics of an ideal single fixed pulley?

• A. It should have a rigid support.
• B. All surfaces should be frictionless.
• C. It should have an extensible string.
• D. All parts should be massless.

Answer 1

Answer: (A), (B), (D)

The correct options are
A It should have a rigid support.
B All surfaces should be frictionless.
D All parts should be massless.

An ideal single fixed pulley should have a rigid support at the top. The major parts of the single fixed pulley such as the axle and the grooved rim, should have a frictionless surface. Also an ideal single fixed pulley should have a massless rope and a massless disc. However, it should have an inextensible string that goes over the smooth fixed pulley.