When you are in the front passenger seat of a car turning to the left, you may find yourself pressed against the right-side door. What concept(s) explain(s) why you press against the door and why the door presses on you? 1. centrifugal force and Newton's second law
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- Children of mass 54 kg ride on a Ferris wheel as shown in Figure. Children move in a vertical circle of radius 14.5 m at a constant speed of 2.85 m/sec. = 0.56 m/sec² a) What is the centripetal acceleration each of the children? Answer: ac b) What is the normal force from the chair when a child is at the Top of the circle, as shown in the Figure? Draw a Free-Body Diagram for this situation in the figure below. Answer: NTop = 499.0 N c) What is the normal force from the chair when a child is at the Bottom of the circle, as shown in the Figure? Draw a Free-Body Diagram for this situation in the figure below. Answer: N Bottom = 559.4 N Top 7 Bottom R5. A ball is thrown with an initial velocity of 8.5 m/s at an angle of 30.0⁰ from the horizontal. How long the ball is in flight? (assume g = 9.81 m/s²) 6. The planet A has a mass of 1.972-1024 kg and the planet B has a mass of 5.348-1024 kg. What is the distance between the planet A and planet B if the force of gravity between them is 2.111-1022 N?. (assume G = 6.670-10-¹¹ Nm²/kg²) 17702-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 shape
- 1. If both the mass and speed of an object are doubled while the radius is decreased by 4x, then the centripetal force is? 2. A 5 kg object has a kinetic energy of 90 Joules. What is the speed of this object? 3. The momentum of a 500 g object is 2000 kg m/s. What is the speed of this object? 4. A ball is thrown straight upward at an initial speed of 70 m/s. What is the acceleration of the object after 13 seconds? 5. An object is thrown straight upward with a speed of 90 m/s. What is the speed of the object after 13 seconds?3 The gravitational force between two objects with masses 9kg and 33kg separated by a distance 5m is x10 N. saved Oa. 49524.75 Ob. 9904.95 question . 79.24 Clear my choice 4 sed d out of A 22kg crate resting on a horizontal surface is pushed as shown. If a force of 69N is required to move the crate the coefficient of static friction ) between the crate and the floor is D Type here to searchA car rounds an unbanked curve of radius 65 m. If the coefficient of static friction between the road and car is 0.72, then answer the following questions. (a) What force provides the centripetal force? A. Weight of the car B. Normal force on the car from the road C. Force of static friction (b) What is the maximum speed at which the car can traverse the curve without slipping? Enter to 2 significant figures Vmax= 18.07 m/s