Physics (torque, if possible)

An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel. The flywheel is a solid disk with a mass of 80.0kg and a dimaeter of 1.25m. It turns on a frictionless axle. Its pulley has much smaller mass and a radius of 0.230m. If the tension in the upper (taut) segment of the belt is 135 N and the flywheel has a clockwise angular acceleration of 1.67 rad/s^2, find the tension in the lower (slack) segment of the belt.

Sol: This problem seems to involve torque; I think solid disc Icm (moment of intertia) is 1/2MR^2; there are other unknown I'm sure but if someone can walk me through this problem (step by step), I'd be most appreciative. I have a test tomorrow. I tried and tried, but finally gave up as I must move on to other practice problems.

force net= upper force - lower force

But force net* radiuspulley= Itotal*angacceleration.

Now I total is the sum of the flywheel and the pulley.

Solve for lower force.

  1. 👍 0
  2. 👎 0
  3. 👁 686

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    The flywheel of a motor is connected to the flywheel of an electric generator by a drive belt. The flywheels are of equal size each of radius . While the flywheels are rotating the tension in the upper and lower portions of the

    asked by Greco on December 5, 2013
  2. physics

    I need to find the sum of energy in this device : A green support turns clockwise at w. A motor is fixed on that support. The stator of this motor turns clockwise at w (it is on the support). The rotor of the motor turns clockwise

    asked by Ld71 on February 10, 2015
  3. Physic

    A vacuum pump is connected to its electric motor by a belt drive (Fig. 9-40, not to scale). The motor rotates at a rate of 1000 rev/min and the diameter of the motor shaft is 2.9 cm. How large (diameter) should the pulley be if it

    asked by Anonymous on May 1, 2014
  4. physics

    A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4000

    asked by mike on March 17, 2010
  5. Physics Rotaional Kinetic Energy

    A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4000

    asked by Anonymous on March 17, 2010
  6. physics

    A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up

    asked by heather on December 2, 2012
  7. physics

    A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up

    asked by monic on November 30, 2012
  8. physics

    hi,need help please.thank. A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 2.00 m and a mass of 525 kg. Before a trip, the flywheel is attached to an electric motor, which brings the

    asked by Chan on November 22, 2009
  9. Physics*

    A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 575 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up

    asked by Allie on October 20, 2011
  10. Physics, please help me today.

    four pulleys are connected by two belts. Pulley A (radius 15cm) is the drive pulley and it rotates at 10 rad/s. Pulley B (radius 10 cm) is connected by belt 1 to pulley A. Pulley B' (radius 5cm) is concentric with pulley B and is

    asked by Dawn on November 17, 2006

More Similar Questions