यदि शाफ्ट 10 rad/s पर घूम रहा है, तो 20 kN का भार उठाने वाले एक फ्लैट फुटस्टेप (या फ्लैट पिवट) बेयरिंग में घर्षण के कारण शक्ति की हानि क्या होगी? बेयरिंग का व्यास 16 cm है, घर्षण गुणांक 0.05 है, और समान घिसाव (uniform wear) माना गया है।

In the differential gear of a car, the pinion mounted on the propeller shaft has 20 teeth and the crown gear has 100 teeth. The propeller shaft rotates at 600 rpm. When the vehicle is taking a turn, one wheel rotates at 140 rpm. Determine the percentage change in speed of the other wheel.

A rack-pinion system has a pinion with 24 involute teeth, 144 mm pitch circle diameter, addendum of 6 mm for both pinion and rack, and 20° pressure angle. Calculate the contact ratio of the rack and pinion mechanism.