An object moves halfway around a cricle of radius R. A tangential force of magnitude F is exerted on x by y. The work done on the object by the tangential force is a) zero b)FR c) FπR d
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Q: angle between F and Ar
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A: Given: M→=-3i^+6j^-5k^N→=-2i^+3j^+k^
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- Pls help ASAPIn Example 10.2, if the angle θ = 82.0°, how much work is done by you, in Joule? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.Question Four forces (measured in Newtons) act on a crate. The forces are given by the vectors: F₁ = 2121-136ĵ+ 241k N, F₂ = 108î+ 144) + 189k N. F3 = -400 + 180) + 240k N, and F₂ = -270k N Given: The magnitude of the resultant force = 449.2 N. The work done by the force F is 770.3J. The moment of the force F₂ = (-108î - 180k) N/m a) What is the angle (in degrees to 2 decimal places) between the force vectors F₂ and F3? b) What is the force vector, F, that acts in the opposite direction to the force F₂ and has magnitude of 203 Newtons?
- The force of attraction on an object below Earth’s surface is directly proportional to its distance from Earth’s center. Find the work done in moving a weight of w lb located a mi below Earth’s surface up to the surface itself. Assume Earth’s radius is a constant r mi.Calculate the dot product of the vectors F = -i + 3j - 6k ; G = 7i - 5j + k. a. 28 b. -28 c. 30 d. -301- An object is constrained to move inside a vertical ring near the surface of Earth as shown in the picture. Answer the following questions: What are the forces acting on the object b) is the work done by each force zero, positive or negativel S
- 1) In the formula given for the calculation of work, the variable F represents: A) The angular coordinate of the vector d when it is written in polar coordinates B) The scalar magnitude of the force doing work C) The angular coordinate of the vector F when it is written in polar coordinates D) The scalar magnitude of the displacement through which the system moves while the force isapplied E) The direction of the force acting on the system F) The angular difference between the vectors F and d G) The diameter of the system H) The weight, or force due to gravity, on the system I) The work done by the force F 2) In the formula given for the calculation of work, the variable d represents: A) The angular coordinate of the vector d when it is written in polar coordinates B) The scalar magnitude of the force doing work C) The angular coordinate of the vector F when it is written in polar coordinates D) The scalar magnitude of the displacement through which the system moves while the force…spherical R a vertical axis on frictionless bearings (see the figure above). A massless cord passes around the equator of the shell, over a pulley of rotational inertia I and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle; the cord does not slip on the pulley. What is the speed of the object when it has fallen a distance d after being released from rest? Use energy considerations. NOTE: Eoncono au ome of andA 10.0-kg bob is attached to a rod whose length is 10.0 m. The right end of the rod is fixed, and the bob is released from rest. a) Determine the speed of the bob when it is below the pivot point (vertical angle is zero). b) Determine the tension in the rod when the bob is below the pivot point. hint: to determine the speed of the bob when it is below the pivot point, you will need to use Calculus.
- A force F = (8 i - 33) N acts on a particle that undergoes a displacement Ař = (4 î + î) m. (a) Find the work done by the force on the particle. (b) What is the angle between F and Ar?1. A simple pendulum acts as a conical pendulum when the mass moves in a horizontal circle. (a) What force keeps it moving in a circle? Please explain. (b) Assume pendulum is moving in a circular motion with a constant speed of 10m/s. Calculate the angle formed between the pendulum with the vertical direction if its mass is 2.0 kg, and it describes a circle with radius of around 10 cm. (c) Compute the work done by centripetal force.