The rotational speed of a wheel of diameter 8.4 cm is 4 rps. When a steel object having mass 250 g is held tightly at the edge of the wheel, it applies a force of 0.5 kg along the tangent of the wheel. If 90% of the work done is converted into heat and absorbed by the object, then what will be the rise in temperature of the object in 1 min? Specific heat of steel = 0.12 cal cdot g^(-1) cdot^(@)C^(-1) and J = 4.2 J cdot cal^(-1).

The rotational speed of a wheel of diameter 8.4 cm is 4 rps. When a st

1.	The rotational speed of a wheel of diameter 8.4 cm is 4 rps. When a steel object having mass 250 g is held tightly at the edge of the wheel, it applies a force of 0.5 kg along the tangent of the wheel. If 90% of the work done is converted into heat and absorbed by the object, then what will be the rise in temperature of the object in 1 min? Specific heat of steel = 0.12 cal cdot g^(-1) cdot^(@)C^(-1) and J = 4.2 J cdot cal^(-1).
Answer» ANSWER :`4.43^(@)C`