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A constant net force of 200 N is exerted to accelerate a car from rest to a velocity of 40 m/s. What is the mass of the cart?
A car is traveling at 9 m/s in a circle that has a radius of 60 m. what must be the minimum value of μ for the car to make the turn without skidding?
A car is to make a term with a radius of curvature of 60 m at a speed of 27 m/s. At what angles should the road be banked for the car to make the turn?
A block attached to a spring oscillates in simple harmonic motion along the x-axis between the two extremes, x = 10 cm and x = 30 cm. The block goes from one extreme to the other in 0.25 s. Its amplitude and frequency are:
A capillary tube with an inside diameter of 𝟓𝟒𝟎 𝝁𝒎 can support a 𝟏𝟎𝟎 𝒎𝒎 column of liquid that has a density of 𝟏𝟑𝟓𝟎𝟎 𝒌𝒈𝒎−𝟑. If 𝒉 = 𝟎.𝟏 then is it possible to find the surface tension of the liquid? If not, then write down the reason.
a 250-N crate is pulled along a horizontal sidewalk at a constant speed by a rope which makes an angle of 40° with the sidewalk. If a force of 150 N is applied on the rope, what is the coefficient of the sliding friction?
. Illustrate the stress and strain of solids.
A ball is released from a height of 20N. Calculate
a. The time it takes to fall
b. The velocity to which it hits the ground
What will happen if an ice skater spinning on one of her toes extends her arms?
a. Her moment of inertia will increase but her angular velocity will decrease.
b. Her moment of inertia and angular velocity will increase.
c. Her moment of inertia and angular velocity will decrease.
d. Her moment of inertia will decrease but her angular velocity will increase.
For a rigid body to be in equilibrium, _________
a. the net torque on it must be zero
b. the net force acting on it must be zero
c. the net force and the net torque acting on it must be zero
d. it must be stable
