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Applied Mechanics MCQs: 503 Questions & Answers in Engineering

503 Applied Mechanics MCQs in Engineering with answers & explanations. Page 17. Practice objective questions for competitive exams, interviews & self-assessm… Use the answer toggle below to show or hide all solutions, tap an option to check one question, or open a question for its own page.

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Applied Mechanics MCQs: 503 Questions & Answers in Engineering

A stone weighing 20 N is whirling in a vertical circle at the extremity of a string 100 cm long. The tension in the string will be zero

The statement --- if forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order then their resultant will be represented in magnitude and direction by the closing side of the polygon taken in opposite order ---- is known as

An automobile weighing 2800 lb and travelling at 30 miles/hr, hits a depression in the road which has a radius of curvature of 50 ft. What is the total force to which springs are subjected.

A projectile is shot straight up with vo = 40 m/s. After how many seconds will it return if drag is neglected?

The necessary condition for the forces acting on a body to be in equilibrium is that these should be

The angular velocity of earth is

The torque of 50 Nm is applied on the wheel operating a valve. If the wheel is rotated through two revolutions, work done in Newton-metres is given by

In a single threaded worm and worm wheel the number of teeth on the worm wheel is 80. The diameter of the effort wheel is 12 cm and that of load drum is 8 cm. The velocity ratio will be

What will be the duration of day and night if the earth shrinks to half the present radius?

A 2 m long shaft rotates about one end at 20 rad/s. It begins to accelerate with ? = 10 rads/s2. After how long, in seconds, will the velocity of the free end reach 100 m/s?

If you want to stop the car in the shortest distance on an icy road, you should

A man pulls a cart with 100 N force from rest with an acceleration of 10 m/sec2 for 10 seconds. The work done by him is

The mass, in kg, of the earth if its radius is 6400 km, will be

The radius of gyration of a solid sphere of radius r is equal to

A particle of mass M moves towards right with a velocity 2 V along the x-axis and another of mass 2 M with a velocity V towards left (- x axis). After the collision (they stick together on colliging) they will

A cannon of weight 10 tonnes fires a shell of 50 kg with a muzzle velocity of 900 m/sec at an angle of 30?. The time taken for the shell to emerge from the barrel is 0.004 sec. The velocity of the cannon would be

A satellite launch station should be

In the third system of pulleys, if there are n number of pulleys then the velocity ratio of the system will be

The direction of projection for the range of a projectile to be maximum on an inclined plane having angle of inclination 30? to the horizontal, whould be

A imaginary planet has half the mass and half the radius of the earth. The acceleration of gravity at its surface would be

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