Question

Subject : Physics Class: VII (Techno) Topic : Circular Motion - (Concept - IV) WORKSHEET - 6 MCQ with oneor morecorrect answers. 1. The external forces acting on a vehicle of mass M moving at a speed ‘v’making a trun on the circular path of radius r is / are a) Weight Mg b) Normal force 2. Static friction is a) self adjustable b) Manual adjustable 3. When a vehi cl e i s taki ng a turn on hori zontal a) Normal force b) Weight 4. On a horizontal road while a vehicle takig turn, it has a tendency to skid a) inward b) out ward c) upward 5. The normal force acting on a vehicle is balanced by a) friction b) speed c) its weight [ ] [ ] d) its mass 6. Forasafeturnonunbankedroad [ ] v2 r2 v2 r2 a)s rg b)s vg c)s rg d)s vg 7. When vehi cl es go through turni ngs, the f orce whi ch wi l l produce the requi red accel erati on i s [] a) centripetal force b) centrifugal force c) Normal force d) kinetic friction 8. The pseudo force observed by a person in a frame in circular motion is [ ] a) Normal force c) Static frictional force b) Gravitational force d) Centri fugal force Sri Chaitanya School 1 No. 1 School In india c) Friction c) Easily available [ ] d) All the above [ ] d) None of the these road, necessary centri petal f orce i s provi ded by [] c) Friction d) Inertia d) downward 9. Statement (A) : Raisingtheinner surfaceof raodslightly abovethelevel of inner edgeiscalled banking of roading. Statement (B) : Expression for angle of banking   tan1  v2   rg  [ ] a) both A and B are true c) A istrue, B isfalse b) both A and B are false d) A isfalse, B istrue 10. Centrifugal force should be used only in 1) inertial frame 2) non - inertial frame 3) Stationary frame [ ] 4) none of these Sri Chaitanya School 2 No. 1 School In india 

Answer 1

Explanation:

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