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- The strings and frictionless pulleys have negligible masses. The coefficients of kinetic friction is 0.25 and static friction is 0.30. Block A has a mass of 3 kg and block B has a mass of 4 kg. a) What is the maximum mass block C can have before block B will start to move? b) If block C has a mass of 7 kg and was 1 m above the ground, how long would it take block C to hit the ground starting from rest?arrow_forwardPlease Asaparrow_forwardA solar sailplane is going from Earth to Mars. Its sail is oriented to give a solar radiation force of FRad = 7.90 × 102 N. The gravitational force due to the Sun is 173 N and the gravitational force due to Earth is 1.00 × 102 N. All forces are in the plane formed by Earth, Sun, and sailplane. The mass of the sailplane is 14,000 kg. A) What is the magnitude of the net force acting on the sailplane? B) What is the direction of the net force acting on the sailplane?arrow_forward
- An object of mass m has these three forces acting on it . F1, F2, and F3 are shown in the figure. Assume the x-direction is to the right, and the y-direction is straight upwards. Let F1 = 7 N, F2 = 9 N, and F3 = 2 N. What is the direction of the net force, expressed as the angle θ, in degrees, that the net force vector makes with respect to the +x-axis? Enter an angle between −180∘ and +180∘.arrow_forwardNewton's Law of Gravitation says that the magnitude F of the force exerted by a body of mass m on a body of mass M is GmM F= where G is the gravitational constant and r is the distance between the bodies. (a) Find dF/dr. dF dr = What is the meaning of dF/dr? O dF/dr represents the amount of force per distance. O dF/dr represents the rate of change of the mass with respect to the distance between the bodies. O dF/dr represents the rate of change of the distance between the bodies with respect to the force. O dF/dr represents the rate of change of the mass with respect to the force. O dF/dr represents the rate of change of the force with respect to the distance between the bodies. What does the minus sign indicate? O The minus sign indicates that the force between the bodies is decreasing. O The minus sign indicates that as the distance between the bodies increases, the magnitude of the force decreases. O The minus sign indicates that as the distance between the bodies increases, the…arrow_forwardAnswer the following questions: 1. A 16-pound weight moves in a horizontal straight line under the joint action of a constant force of 8 pounds in the direction of motion, and a resisting force whose magnitude in pounds is equal to twice the velocity and in feet per second. If the body starts from rest, find its velocity and the distance traveled after 1/4 second.2. A body falls from rest against a resistance that is proportional to the square root of the speed at any instant. If the terminal speed is 64 feet per second, how long will it take to attain a speed of 49 feet per second?arrow_forward
- An object of mass m has these three forces acting on it (there is no normal force, "no surface"). F1 = 1 N, F2 = 10 N, and F3 = 4 N. When answering the questions below, assume the x-direction is to the right, and the y-direction is straight upwards. What is the magnitude of the net force, in newtons? What is the angle θ, in degrees, of the net force, measured from the +x-axis? Enter an angle between -180° and 180°. What is the magnitude, |a| of the acceleration, in meters per square second, if the block has a mass of 8.9 kg?arrow_forwardIn Newton's 2nd law experiment, the relation between the added mass (M₁) and the inverse of the acceleration M. (kg) (1/a) is shown in the figure. The driving force is constant (M₁0.08 kg). Q5: The magnitude of the gravitational acceleration (in m/s) estimated Slope= 0.85 N from the graph is: a) 11.88 b) 9.50 c) 8.50 d) 13.25 e) 10.63 0.4 1/a (s/m) 06: The mass of the cart Mc (in kg) is: a) 0.30 b) 0.28 c) 0.24 d) 0.20 e) 0.26 M. Mc Mharrow_forwardThe position of a 2.6 kg mass is given by x=(2t3−5t2) m, where t is in seconds. What is the net horizontal force on the mass at t=0s? What is the net horizontal force on the mass at t=1s?arrow_forward
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