20) A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first

sphere with greater rotational energy at bottom than cylinder

sphere with lesser rotational energy at bottom than cylinder

cylinder with greater rotational energy at bottom than sphere

both reach the bottom simultaneously with equal rotational energy at bottom

Answer is:

sphere with lesser rotational energy at bottom than cylinder

Structural Engineering I MCQ with Answers

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21) A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is

2 J

4 J

6 J

8 J

Answer is:

4 J

22) A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is:{where ′g′ is acceleration due to gravity and 0 is inclination of plane with horizontal.}

(1/3) g sinB

(2/3) g cos 9

(2/3) g sin 0

g sin 9

Answer is:

(2/3) g sin 0

23) A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is { where g is acceleration due to gravity}

(1/3) g sin0

(2/5) g sin 0

(3/7) g sin 0

(5/7) g sin0

Answer is:

(5/7) g sin0

24) A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is

less than (1/3) tan 0

less than (2/3) tan 0

less than (1/3) sin 6

less than (2/3) sin 6

Answer is:

less than (1/3) tan 0

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20) A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first

sphere with lesser rotational energy at bottom than cylinder

Structural Engineering I MCQ with Answers

Related Structural Engineering I MCQ with Answers

21) A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is

4 J

22) A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is:{where ′g′ is acceleration due to gravity and 0 is inclination of plane with horizontal.}

(2/3) g sin 0

23) A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is { where g is acceleration due to gravity}

(5/7) g sin0

24) A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is

less than (1/3) tan 0

Structural Engineering I MCQ with Answers