Physics Rotational Mechanics Level: High School
What’s the angular momentum of a solid square plate that measures 20.0 cm on each side are rotates at 25 radians / s around an axis perpendicular to the plane of the plate ?
Physics Rotational Mechanics Level: High School
What’s the angular momentum of a 0.500 kg ball moving in a circle at a speed of 4.0 m/s at the end of a 1.2 m cord ?
Physics Rotational Mechanics Level: High School
Moment of Inertia
Calculate I for the system which is shown at “click here” . Ignore the mass of the rods .
Physics Rotational Mechanics Level: High School
A 5.00 kg ball is swung at the end of a 1.25 m chain with an omega of 2.0 s^-1 . Find the ball’sa) V (m/s)
b) KE using ½ mV^2
c) I , its moment of inertia
d) KE using its I
e) Fc , the centripetal force exerted by the athlete
Physics Rotational Mechanics Level: High School
A bikes wheel has a diameter of 70.0 cm . If it is rolling at 4.00 revolutions / sec . Finda) the forward velocity of the bike (linear motion )
b) the velocity of a point at the top of the tire .
c) the velocity of a point at the bottom of the tire where it touches the rod .
Physics Rotational Mechanics Level: High School
A car tire of radius 45 cm turns at a constant 14 rad/s . For a point on the edge calculate .a) the tangential V
b) the tangential “a”
c) the centripetal “a”
Physics Rotational Mechanics Level: High School
A merry-go-ground starts from rest and reaches 1.8 s^-1 in 30.s . Find infinite .
Physics Rotational Mechanics Level: High School
A fan turns a total of 800 . radian s in 20.0 s . Find omega and T (its period) .
Physics Rotational Mechanics Level: High School
The tachometer on a car reads 2500 rpm (revolutions per minute ) . Find omega in radians / s .
Physics Measurements Level: High School
Pressure on a square plate is measured by measuring the force on the plate and dividing it by the area of the plate calculated by measuring the sides of the plate if the maximum error in the measurement of force and length are respectively 3% and 1% the maximum error in the measurement of pressure is ?a) 2%
b) 3%
c) 4%
d) 5%
Physics Force & Laws Of Motion Level: High School
A car traveling down hill with a constant velocity, which of the following is true .a) There is a net force acting on the car in the downhill direction .
b) There is a net force on the car in the uphill direction .
c) Uphill force acting on the car balance and cancel one another .
d) There is no force acting on the car .
Physics Properties Of Matter Level: High School
Bernoulli’s Equation
A horizontal pipe carries water at one point the pipe widens to four times its previous cross sectional area if the speed of the flow in the narrow part of the pipe is 4 m/s find the change in pressure from the narrow to the wider part of the pipe .a) decrease in pressure by 7500 Pa .
b) increase in pressure by 7500 Pa .
c) decrease in pressure by 3000 Pa .
d) increase in pressure by 3000 Pa .
Physics Properties Of Matter Level: High School
Fluids
When the two arms of a U-tube manometer containing mercury are connected to two chambers the difference in the heights of the mercury in the two arms is 4.5 cm what is the difference in pressure between the chambers ? (density of mercury 13600 kg/m^3 and g = 9.8 m/s^2 )a) 1.0 x 10^4 Pa
b) 6.0 x 10^5 Pa
c) 6.0 x 10^4 Pa
d) 1.0 x 10^5 Pa
Physics Properties Of Matter Level: High School
Solids
A cylindrical specimen of steel of cross section area 5 cm^2 is subjected to a tensile force of 800 N the stress in the material is ?a) 1.6 x 106 N/m^2
b) 3.2 x 106 N/m^2
c) 4.0 x 103 M/m^2
d) 8.0 x 103 N/m^2
Physics Rotational Mechanics Level: High School
Conservation of Angular Momentum
Two wheels with rotational inertias 1.0 kg m^2 and 1.5 kg m^2 are rotating on the same axis at 20 rad/s and 12 rad/s respectively in opposite directions if the wheels are suddenly coupled together find the common angular speed of the wheels after coupling .a) 14 rad / s
b) 0.57 rad / s
c) 0.40 rad / s
d) 0.80 rad / s
