The discussion revolves around determining the thrust exerted by a lorry starting from rest with a specified acceleration. The subject area includes dynamics and forces, particularly focusing on Newton's second law of motion.
Some participants have provided the mass of the lorry and calculated the thrust based on the given acceleration. There is an ongoing exploration of whether gravitational forces should be considered in this scenario, with clarification offered about the direction of forces involved.
Participants are working under the assumption that the lorry is accelerating on a level road, which may influence their consideration of gravitational effects on horizontal motion.
The mass is 28000kg,so 28000x2=56000 Ngneill said:You'll need to provide the mass of the lorry. That will be the "m" in your f = ma.
Presumably the motion that is of interest here is in the horizontal direction, and the lorry is accelerating along a level road surface. Gravity operates in the vertical direction, and the road surface prevents motion in that direction. The vertical force due to gravity (weight) does not contribute to motion in the horizontal direction.fleur said:The mass is 28000kg,so 28000x2=56000 N
would i just multiply it by the acceleration of 2 ms-2 but what about the acceleration due to gravity