Torque: The turning effect of Force

If a torque of 55 N-m is required to turn a bolt and the largest force you can exert is 135 N. How long a lever arm must you use to turn the load?

• 7425 m

• 0.407 m

• 2.45 m

• 1 m

You have a 0.234 m long wrench . A job requires a torque of 32.4 N-m and you can exert a force of 232 N. What is the smallest angle with respect to the handle of the wrench ,at which you can pull and get the work done ?

• 37 degree

• 53 degree

• 0 degree

• 90 degree

You have a 0.234 m long wrench . A job requires a torque of 32.4 N-m and A friend can exert a force of 275 N. What is the smallest angle with respect to the handle of the wrench ,at which She can pull and get the work done ?

• 60 degree

• 30 degree

• 0 degree

• 90 degree

You stand on a bicycle pedal as shown in the figure. Your mass is 65 kg ,If the pedal makes an angle of 35 degrees above the horizontal and the pedal is 0.18 m from the center of the chain ring ,How much torque would you exert ?

• 74 N-m

• 84 N-m

• 94 N-m

• 50 N-m

You stand on a bicycle pedal as shown in the figure. Your mass is 65 kg ,If the pedal is along the horizontal and the it is 0.18 m from the center of the chain ring ,How much torque would you exert ?

What is the torque when pedal is vertical ?

• Pedal Horizontal: 0 N-m

  Pedal Vertical : 0 N-m

• Pedal Horizontal: 110 N-m

  Pedal Vertical : 110 N-m

• Pedal Horizontal: 0 N-m

  Pedal Vertical : 110 N-m

• Pedal Horizontal: 110 N-m

  Pedal Vertical : 0 N-m