In the friction cone experiment the hanging mass, which was 250g remained stationary when the wheel was rotated at the rate of 1//2 revolutioin per second. Calculate Joule's mechanical equivalent of heat if the rise in temperature was 4^(@)C in 15 minutes.The total water equivalent of cones and water was 100g, diameter of the wooden disc =50cm sp. heat capacity of water =1000cal per kg per kelvin.

In the friction cone experiment the hanging mass, which was 250g remai

1.	In the friction cone experiment the hanging mass, which was 250g remained stationary when the wheel was rotated at the rate of 1//2 revolutioin per second. Calculate Joule's mechanical equivalent of heat if the rise in temperature was 4^(@)C in 15 minutes.The total water equivalent of cones and water was 100g, diameter of the wooden disc =50cm sp. heat capacity of water =1000cal per kg per kelvin.
Answer» ANSWER :`4.33Jcal^(-1)`