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a) Define the terms work, energy and power for application to both linear and rotational motion. [6 marks] b) A belt fri
Posted: Fri Jul 01, 2022 6:38 am
by answerhappygod
- A Define The Terms Work Energy And Power For Application To Both Linear And Rotational Motion 6 Marks B A Belt Fri 1 (49.66 KiB) Viewed 31 times
a) Define the terms work, energy and power for application to both linear and rotational motion. [6 marks] b) A belt friction brake applied at the circumference of a pulley of 750 mm diameter exerts a backward drag of 425 N. If the speed of the pulley is 550 rev/min, find: the torque applied to the pulley. ii. the power absorbed by the brake. the efficiency of the motor if it has an input power of 8.45kW. [3 marks] [3 marks] [3 marks] c) The driver of a car of mass 1500kg falls asleep while it is travelling at 25m/s. The car runs into the back of the car in front which has mass 900kg and is travelling in the same direction at 20m/s. The bumpers of the two cars become locked together and they continue as one vehicle. 1. What is the final speed of the cars? ii. What impulse does the larger car give to the smaller one? ill. What impulse does the smaller car give to the larger one? [6 marks] [2 marks] [2 marks]