Engineering Sciences
GATE XE Mechanics of rigid bodies PYQs
Build your understanding with focused practice from past exam papers.
Questions 71–72 of 72. Imported answers require independent review unless marked reviewed.
Question 69
Open questionXE-DNAT2 marksNeeds review
A manually operated band brake has a control lever EFG as shown and has a coefficient of kinetic friction equal to 0.2. The cylinder initially rotates clockwise at a constant frequency of 10 revolutions per second. A force P = 300N is applied at G. The pin support at O is frictionless. The radius of the cylinder is
and the radius of gyration is 0.1m. The mass of the cylinder is 50kg. Assume acceleration due to gravity
. The time required (in seconds) to reduce the rotational frequency to 5 revolutions per second is __________. 
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Open questionXE-DNAT2 marksNeeds review
In a pin-connected mechanism shown, load P applied at F is 50N. Neglect the weight of the links and assume
for the spring. The bars EH and FG are pinned at O at their centre such that the lengths of EO, GO, HO and FO are all equal to
. The spring between G and H is unstretched when
. The angle
(in degrees) under equilibrium is __________. 
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