- #1

- 394

- 6

## Homework Statement

In the figure, block 1 has mass

*m*1 = 450 g, block 2 has mass

*m*2 = 530 g, and the pulley is on a frictionless horizontal axle and has radius

*R*= 5.3 cm. When released from rest, block 2 falls 71 cm in 5.0 s without the cord slipping on the pulley.

**(a)**What is the magnitude of the acceleration of the blocks? What are

**(b)**tension

*T*2 (the tension force on the block 2) and

**(c)**tension

*T*1 (the tension force on the block 1)?

**(d)**What is the magnitude of the pulley’s angular acceleration?

**(e)**What is its rotational inertia? Caution: Try to avoid rounding off answers along the way to the solution. Use

*g*= 9.81 m/s2.

## Homework Equations

F=ma

## The Attempt at a Solution

im on part a, and i dont know why i keep getting a=-9.81m/s/s, it should be less than that.