A grinding machine whose wheel has a radius of 1/π is rotating at 2.5rev/sec A tool to be sharpened is held against the wheel with a force of 40N. If the coefficient of friction between the tool and wheel is 0.2, power required is:
A
40W
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
4W
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
8W
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
10W
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A40W Given radius of wheel r=1π