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Questions (35)

Assume that the Earth is a solid sphere of constant density, with mass 5.98 × 1024 kg and radius 6370 km.What is the moment of
1. 1 answer
2. 150 views
A 95-kg halfback makes a turn on the football field. The halfback sweeps out a path that is a portion of a circle with a radius
1. 1 answer
2. 215 views
A 900-kg car moving at 10 m/s takes a turn around a circle with a radius of 25.0 m. Determine the acceleration and the net force
1. 1 answer
2. 108 views
A stone tied to the end of a string 80 cm long is whirled in a horizontal circle wit a constant speed. If the stone makes 14
1. 1 answer
2. 213 views
A stone tied to the end of a string 80cm long is whirled in a horizontal circle with a constant speed. If the stone makes 14
1. 1 answer
2. 225 views
A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 14
1. 7 answers
2. 235 views
A stone is tied at one end of a 5 m long string and whirled in a vertical circle. The minimum speed required to just cross the
1. 5 answers
2. 187 views
An airplane propeller slows from 14 rad/s to 1.3 rad/s as the propeller completes 14 revolutions. Find the angular acceleration
1. 1 answer
2. 180 views
An airplane propeller slows from 14 rad/s to 1.3 rad/s as the propeller completes 14 revolutions. Find the angular acceleration
1. 1 answer
2. 197 views
A centrifuge in a medical laboratory is used to separate the white blood cells, red blood cells, and plasma. When turning off
1. 1 answer
2. 181 views
An airplane propeller slows from 14 rad/s to 1.3 rad/s as the propeller completes 14 revolutions. Find the angular acceleration
1. 0 answers
2. 203 views
An airplane propeller slows from 14 rad/s to 1.3 rad/s as the propeller completes 14 revolutions. Find the angular acceleration
1. 1 answer
2. 204 views
A dentist's drill is used to fix problems with your teeth. Suppose that a doctor increases the angular speed of his drill from
1. 1 answer
2. 230 views
Solve the following integral and find the equation of motion. S'do (1) dt = S'a dz
1. 1 answer
2. 89 views
What is the centripetal acceleration of an object moving on a circular path of 1.5 m if it has an acceleration of 3.5 m/s2 and
1. 1 answer
2. 170 views
What is the centripetal acceleration of an object moving on a circular path of 1.5 m if it has an acceleration of 3.5 m/s2and an
1. 1 answer
2. 157 views
What is the scalar product of the radial and the tangential unitvectors (𝑟̂.𝑡̂), (the unit of measuring each of them is
1. 1 answer
2. 208 views
What is the average angular velocity of an object makes 6.5 revin 12 seconds?
1. 1 answer
2. 121 views
What is the arc length of the arc 12cm 45deg?
1. 1 answer
2. 111 views
What is the arc length of the arc (AB) shown in the figure?12cm 45^o
1. 1 answer
2. 108 views
What is the angular displacement for an object makes 1.4 rev?
1. 1 answer
2. 211 views
An electric motor is attached to a small wheel that is rotating at a rate of 150 rev \min . if the motor is switched off so that
1. 1 answer
2. 190 views
a bicycle has a wheel of radius of 35.56cm.what is the angular speed of the wheels when the bicycle has a forward speed of
1. 1 answer
2. 222 views
which of the following is not a unit of rotational ,speed?a)meter per second b)revolutions per minute c) revolutions per second
1. 3 answers
2. 111 views
a sport utility vehicle has tires which are 110cm in diameter.if the wheel is rotated through 30 rev\min,how far forward does a
1. 1 answer
2. 109 views
an object completes 1.5 circular in half a minute. what is it's angular velocity?
1. 1 answer
2. 78 views
the linear speed of an object is directed along the tangent to the objet's circular path . this is also known as
1. 1 answer
2. 118 views
which of the following is not a unit of rotational speed ?a)meters per second b)revolutions per minute c)revolutions per second
1. 1 answer
2. 117 views
a bicycle has a wheel of radius of 35.56 cm .what is the angular speed of the wheels when the bicycle has a forward speed of
1. 1 answer
2. 115 views
angular displacement is measured in (SI unit)
1. 1 answer
2. 94 views
A sport utility vehicle has tires which are 110cm in diameter If the wheel is rotated through 30 revolutions,how far forward
1. 1 answer
2. 144 views
which would have a greater linear velocity ?A)kid near the center of the merry go round B)kid near the outside of the merry go
1. 1 answer
2. 119 views
the linear speed of an object directed along the tangent to the object's circular path.
1. 3 answers
2. 121 views
If the displacement of an object moving in a circular motion in terms of time is given by 6t^2 + 8what would be the expression
1. 1 answer
2. 108 views
A race car is making a U-turn at constant speed. The coefficient of friction between the tires and the track is μ= 1.20. If the
1. 1 answer
2. 201 views

Answers (2)

a bicycle has a wheel of radius of 35.56cm.what is the angular speed of the wheels when the bicycle has a forward speed of 8.0m\s?
An object completes 1.5 circular orbits in half a minute.what is it's approximate angular velocity ?

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