Energy in Connected Objects (Systems) Video Lessons

Example

# Problem: Two objects are connected by a light string passing over a light, frictionless pulley as shown in Figure P8.7. The object of mass m1 is released from rest at height h above the table. Using the isolated system model, (a) determine the speed of m2 = 4.0 kg just as m1 = 12.0 kg hits the table. Mass, m1 is initially at a height of 2.0 m.(b) find the maximum height above the table to which m2 rises.

###### FREE Expert Solution

Potential energy:

$\overline{){\mathbf{P}}{\mathbf{E}}{\mathbf{=}}{\mathbf{m}}{\mathbf{g}}{\mathbf{h}}}$

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###### Problem Details

Two objects are connected by a light string passing over a light, frictionless pulley as shown in Figure P8.7. The object of mass m1 is released from rest at height h above the table.

Using the isolated system model,

(a) determine the speed of m= 4.0 kg just as m1 = 12.0 kg hits the table. Mass, m1 is initially at a height of 2.0 m.

(b) find the maximum height above the table to which m2 rises.