COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 10, Problem 68QAP
To determine
The position of 1 kg object from 10 kg object such that the net force on 1 kg object is zero.
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In a judo foot-sweepmove, you sweep your opponent’sleft foot out from under him whilepulling on his gi (uniform) towardthat side. As a result, your opponentrotates around his right footand onto the mat. Figure 10-44shows a simplified diagram ofyour opponent as you face him,with his left foot swept out. Therotational axis is through point O.The gravitational force on himeffectively acts at his center ofmass, which is a horizontal distanced = 28 cm from point O.Hismass is 70 kg, and his rotational inertiaabout point O is 65 kg m2.What is the magnitude of his initialangular acceleration about point O if your pull on his gi is (a) negligibleand (b) horizontal with a magnitude of 300 N and applied atheight h = 1.4 m?
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Chapter 10 Solutions
COLLEGE PHYSICS
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- A point mass m is located a distance D from the nearest end of a thin rod of mass M and length L along the axis of the rod. Find the gravitational force exerted on the point mass by the rod.arrow_forwardDetermine the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/15 of its value at the Earth's surface.arrow_forwardA uniform wire with mass M and length L is bent into a semicircle. Find the magnitude and direction of the gravitational force this wire exerts on a point mass m placed at the center of the curvature of the semicircle.arrow_forward
- Solve Using Work/Energy Methods :On an asteroid like Bennu, where NASA just landed a probe on October 20, a pressurized nitrogen canister is used to break rocks loose from the surface. One of those rocks is launched straight upward from the surface.(HCPCRN32387)If the initial speed of the rock is 520 m/s,determine the maximum height it reaches if the mass of the asteroid is only 5% that of the earth’s while the radius is 12% that of the earth’sarrow_forwardA 225-kg object and a 525-kg object are separated by 3.90 m. (a) Find the magnitude of the net gravitational force exerted by these objects on a 45.0-kg object placed midway between them.2.37e-7 N(b) At what position (other than an infinitely remote one) can the 45.0-kg object be placed so as to experience a net force of zero from the other two objects? ????? m from the 525 kg mass toward the 225 kg massThe force due to the larger mass will be greater than the force due to the smaller mass when the distances are equal. Do you expect the object to be closer to the large mass when the forces are equal? m from the 525 kg mass toward the 225 kg mass The correct answer is NEITHER 1.35m nor 2.55marrow_forwardA coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 8.0-kg object at the origin of the coordinate system, a 14.0-kg object at (0, 2.0), and a 21.0-kg object at (4.0, 0). Find the resultant gravitational force exerted by the other two objects on the object at the origin. magnitude N direction °arrow_forward
- (II) Determine the distance from the Earth’s center to apoint outside the Earth where the gravitational accelerationdue to the Earth is 1/10 of its value at the Earth’s surface.arrow_forward2-D star cluster puzzle Find the net gravitational force for VI) A regular Octagon Let m=mass of the star = 1.99 x 10^30 kg, l=earth to star distance=149.6 x 10^6 km, G=6.67 x10^-11 N m^2/kg^2. Note that the masses of each star are the same. Also, it is advised to use vectors and components. And you can just find the gravitational net force of one of the stars in the shapearrow_forward2-D star cluster puzzle Find the net gravitational force for III) Pentagon Let m=mass of the star = 1.99 x 10^30 kg, l=earth to star distance=149.6 x 10^6 km, G=6.67 x10^-11 N m^2/kg^2. Note that the masses of each star are the same. Also, it is advised to use vectors and components. And you can just find the gravitational net force of one of the stars in the shapearrow_forward
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