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acceleration due to gravity has the value of g that is affected by the bob's mass.
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- A cosmic ray muon with mass m = 1.88 1028 kg impacting the Earths atmosphere slows down in proportion to the amount of matter it passes through. One such particle, initially traveling at 2.50 108 m/s in a straight line, decreases in speed to 1.50 108 m/s over a distance of 1.20 km. a. What is the magnitude of the force experienced by the muon? b. How does this force compare to the weight of the muon?(a) Find the magnitude of the gravity force between a planet with mass 5.98 1024 kg and its moon, with mass 7.36 1022 kg, if the average distance between them is 3.84 108 m. (b) What is the acceleration of the moon toward the planet? (c) What is the acceleration of the planet toward the moon? (See Section 7.5.)An object has a mass of 100 kg.a) How much does it weigh on Earth?b) How much does it weigh on the Moon (gmoon = 1.6 m/sz)?
- A 5000 kg lorry gradually accelerates from rest. There is a box of mass 200 kg on the back of the lorry. The box is not tied to the lorry. The lorry accelerates from rest to a speed of 15 m/s over a certain distance. The maximum frictional force between the lorry and the box is 630 N. The maximum acceleration (in m/s^2) that the lorry can have without the box falling off is: О 3.15 O 15 O 0.126 O10 uo l1:00 ENG 4)Jimmy's heart accelerates 2.4 x 102kg of blood from 0.15 m/s to 0.32 m/s over an elapsed time of 0.12s every time he sees Janine. Find the magnitude of the acceleration of the blood and use that value to calculate the net force needed to cause that acceleration.A flea jumps by exerting a force of 1.12 x 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 1.12 x 10-6 N on the flea. Find the direction and magnitude (in m/s2) of the acceleration of the flea if its mass is Fwind points to the right. We will consider this to be the +x direction and vertical to be the ty 6.0 x 10-7 kg. (Let us assume me that F direction.) magnitude direction Additi m/s² O (measured clockwise from the vertical)
- Question 5. A 21.3-g bullet is fired from a rifle. It takes 2.40 × 10-³ s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 730 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet. Ans: 6479 N IN Question 6. A planet has a mass of 707 is the 2000Mary applies a force of 80 N to push a box with an acceleration of 0.40 m/s². When she increases the pushing force to 86 N, the box's acceleration changes to 0.63 m/s². There is a constant friction force present between the floor and the box. (a) What is the mass of the box in kilograms? 200 X Consider applying Newton's Second Law to each of the pushing forces. kg (b) What is the coefficient of kinetic friction between the floor and the box? -0.020 X What is the relation between friction force and normal force? Did you apply Newton's Second Law to motion in the vertical direction?Newton's 2nd law states that the acceleration of an object is directly proportional to the net force exerted, but inversely proportional to the object's mass. = m How many newtons of force are needed to accelerate an object with mass of m = 16.28 kg at a rate of a = 17.68 m/s?
- A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the frictional force) is in newtons. Find the time required for the boat to slow down to 45 km/h.A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50×105 kg, its speed is 68.0 m/s, and the net braking force is 4.30×105N, what is its speed 11.0 s later? How far has it traveled in this time?The traveller travels to a planet in a neighboring solar system. It is a long trip, but she somehow manages to maintain her physical condition by conscientious exercise and diet control. The acceleration due to gravity on this planet is 12.3 m/s². What is the traveller's mass m' on the planet? m² = 730.25 kg
