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WorksheetsWeek 5: Tutorial PHY210 (Chapter 1-3)
Total questions: 20
Worksheet time: 17mins
If the kid on the left weights 490 N, 0.5m away from the pivont point, then the second kid must have____________ in order to keep it in static equilibrium
340 N, 0.1 m away from the pivont point to the right
220 N, 0.2 m away from the pivont point to the left
490 N, 0.5m away from the pivont point to the right
What direction is the torque acting with respect to post A?
clockwise
Counter clockwise
Neither Direction
Depends on the mass of the diver
All the forces rotating counterclockwise will have a _______ torque
positive
negative
All the forces rotating clockwise will have a _______ torque
positive
negative
Giving the following image, the force is...
counter clockwise (positive)
clockwise (negative)
What happens to rotational inertia of an object when mass is moved close to axis of rotation?
Decreases
Increases
Stays the Same
A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?
450 N
350 N
4.5 N
200 N
4 sec = ______ Hz.
From the graph ,the spring constant is.
4.5 m
15 N
20 N/m
200 N/m
The amplitude and period in a SHM is 0.5 m and 0.4 s respectively. The equation of SHM will be:
x=0.5 sin 5πt
x=0.5 sin 4πt
x=0.5 sin 2.5πt
x=0.5 sin 0.8πt
Conditions for equilibrium are:
1st condition: net force = 0
2nd condition:net torque = 0
True
False
The relation between linear velocity and angular velocity
r = v⍵
⍵ = vr
v = r⍵
a = v⍵
The force that keeps the tennis ball going in a circle is called?
torque
centripetal force
centrifugal force
gyroscopic progression
