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## Class 11 Physics (India) - Hindi

### Course: Class 11 Physics (India) - Hindi>Unit 4

Lesson 4: Gravitational potential energy and conservative forces (Hindi)

# Finding change in gravitational potential energy

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## Problem

A $1.0\phantom{\rule{0.167em}{0ex}}\text{kg}$ toy car is released at the top of a frictionless track on the left and rolls off of the track from its right side ramp. The car starts at a height of $0.80\phantom{\rule{0.167em}{0ex}}\text{m}$, goes through a $0.50\phantom{\rule{0.167em}{0ex}}\text{m}$ diameter loop, and exits the ramp at a height of $0.25\phantom{\rule{0.167em}{0ex}}\text{m}$.
What is the change in the car’s gravitational potential energy from $A$ to $B$?
Round answer to two significant digits.
$\text{J}$
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